Less than a year after securing a $6 billion valuation amid a pandemic usage boost, design unicorn Canva has more than doubled the valuation for its design software tools — making two of its cofounders billionaires in the process.

Sydney, Australia-based Canva announced Tuesday it raised $71 million in new funding led by T. Rowe Price and Dragoneer at a $15 billion valuation. Existing investors including Blackbird Ventures and Skip Capital joined the round. Canva, which says it remains profitable, also announced that its business has passed $500 million in annualized revenue, up 130% from the year before.

With the new funding, cofounder and CEO Melanie Perkins, as well cofounder and COO Cliff Obrecht, are both billionaires. Forbes estimates that Perkins and Obrecht, who married in January 2021, each owned about 15% of Canva prior to the investment, with minimal dilution from the new raise. At a $15 billion valuation, the couple each would hold stakes worth about $2 billion. (Forbes applies a 10% discount to private company valuations.)

Not that they plan to keep it that way. In an interview, Obrecht says the couple are already looking into launching a foundation to contribute heavily to causes like climate change and global wealth inequality. “It’s not our vibe to hoard money,” Obrecht says. “What motivates us is building a product that people love. And the wealth that produces, we want to give back to the world.”

Launched in 2013, when a third cofounder, Cameron Adams, joined Perkins and Obrecht, Canva overcame an unlikely origin story and home base of Australia to build a global business that already boasted 20 million users as of December 2019, when Perkins appeared on the cover of Forbes.

Today, that number stands at 55 million active users, three million of them paid, Adams (whose own stake in Canva is not known) said in an interview. Originally popular for lightweight design tools that made it easy for small- and medium-sized businesses to draft print and digital assets like menus and Instagram cards, Canva has since grown into more of a real-time collaboration suite.

While Canva claims that more than 85% of the 500 largest companies in the U.S. by revenue use Canva in some capacity, in many of those companies, Canva’s still early in the process typical of “freemium” software companies to expand to large-scale, company-wide use. In recent months, real-time features to allow for live team editing of videos and other digital assets has spurred such adoption, Adams says. Some of Canva’s banner customers: American Airlines, Kimberly-Clark, McKinsey and Salesforce.

Of particular focus during the pandemic, especially at those larger companies: presentations, the company’s fastest-growing document type, and to which it has added features recently such as presenter video recording tools and a live, Q&A friendly version.

“The pandemic has accelerated trends that were naturally happening today,” says Obrecht. With workers increasingly dependent on Slack and other chat tools, “it takes a lot more to cut through all the written stuff,” he adds.

And with Australia already fully reopened for in-person business, along with New Zealand and some Asian countries, Canva doesn’t expect those trends to go away. Canva’s own headquarters reopened months ago; while employees trickled in at first, half the company is in-person at any given time, Obrecht says, and closer to three-quarters on its social Fridays. Such hybrid office environments make asynchronous visual tools more valuable, he adds — and more efficient.

With the funding, Canva plans to continue to invest in product, which means hiring; the company’s second-largest office remains in Manila, but Canva recently opened a presence in Austin, Texas, and has hired a handful of staff in San Francisco, too.

Like its previous funding round, however, Canva’s newest raise brought in a relatively small amount of cash for growth, raising the question why a profitable, triple-digit-sales growth business would bother for such a sum. Obrecht points to two more reasons: employee and investor liquidity — some were able to sell shares in the round, something Canva tries to do annually, he says — and acquisitions. “It solidifies a new valuation when buying companies,” he says. “It’s hard for us otherwise to say, ‘we were worth $6 billion a year ago, now we are worth $15 billion.’ It’s a healthy dynamic.”

This story has been updated with comment from Canva cofounder Cliff Obrecht.